Certain bureau in East China applied the mobile
terminal partial discharge online monitoring system to short-term online
monitoring of the terminals with suspected partial discharge in 2014. The
system is powered by solar energy or batteries and supports 3G wireless
communication. High-frequency CT sensor shall be installed in the joint well or
the joint box while other devices shall be installed in the chassis. 3G
wireless network will transmit all partial discharge signals of the collectors
to the monitoring host of the integrated control center to achieve real-time
monitoring of cable partial discharge on the supervisory control computer.
The system detects three terminal joint defects after
half a year which have been dissected and verified.